Early morning fog lingering around areas of the North Island this morning is expected to clear by mid-morning, making way for some sun and warmer temperatures.

While the humid air brought a considerable amount of fog to most of the central and upper north island, it wasn't enough to affect flights coming in or out of Auckland and Hamilton airports this morning.

MetService meteorologist Tom Adams expected the air would be clear by mid-morning.

He said for the most part the weather was staying true to the stereotypes.

"Wet on the West Coast, windy in Wellington, dry in the east and warm in the north," he said. "It's the meteorological equivalent of sticking to what you are good at."

But he said this didn't rule out a few surprises in the mix, with wind and rain reaching warning levels at times.

"Rainfall warnings are currently issued for parts of the West Coast and the severe weather outlook has a chance on Thursday of heavy rain for Kapiti and gales through Cook Strait."

He said it was worth keeping an eye on the forecast.

"It is not unusual for autumn weather to get pretty wild."

It was largely fine weather in the main centres today, with Auckland expected to reach a high of 22C and only the chance of late showers.

Wellington was expected to be cloudy, with the chance of scattered showers though there'd be a strong northwesterly winds gusting up to 90 km/h. Today's high in the capital was forecast to be 18C.

A sunny day was forecast for Christchurch, with a high of 20C.